Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 92845.41 
• Atom Count: 5557 
• Residue Count: 828 
• Unique protein chains: 1

1Q5K

crystal structure of Glycogen synthase kinase 3 in complexed with inhibitor

• DOI: 10.2210/pdb1Q5K/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni


• Deposited: 2003-08-08 Released: 2004-08-10 
• Deposition Author(s): Bhat, R., Xue, Y., Berg, S., Hellberg, S., Ormo, M., Nilsson, Y., Radesater, A.C., Jerning, E., Markgren, P.O., Borgegard, T., Nylof, M., Gimenez-Cassina, A., Hernandez, F., Lucas, J.J., Diaz-Mido, J., Avila, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.94 Å
• R-Value Free: 0.242 
• R-Value Work: 0.222 

Literature

Structural insights and biological effects of glycogen synthase kinase 3-specific inhibitor AR-A014418.

Bhat, R., Xue, Y., Berg, S., Hellberg, S., Ormo, M., Nilsson, Y., Radesater, A.C., Jerning, E., Markgren, P.O., Borgegard, T., Nylof, M., Gimenez-Cassina, A., Hernandez, F., Lucas, J.J., Diaz-Nido, J., Avila, J.

(2003) J.Biol.Chem. 278: 45937-45945

• PubMed: 12928438 
• DOI: 10.1074/jbc.M306268200


• PubMed Abstract: 
  

Glycogen synthase kinase 3 (GSK3) is a serine/threonine kinase that has been implicated in pathological conditions such as diabetes and Alzheimer's disease. We report the characterization of a GSK3 inhibitor, AR-A014418, which inhibits GSK3 (IC50 = 104 +/- 27 nM), in an ATP-competitive manner (Ki = 38 nM). AR-A014418 does not significantly inhibit cdk2 or cdk5 (IC50 > 100 microM) or 26 other kinases demonstrating high specificity for GSK3. We report the co-crystallization of AR-A014418 with the GSK3beta protein and provide a description of the interactions within the ATP pocket, as well as an understanding of the structural basis for the selectivity of AR-A014418. AR-A014418 inhibits tau phosphorylation at a GSK3-specific site (Ser-396) in cells stably expressing human four-repeat tau protein. AR-A014418 protects N2A neuroblastoma cells against cell death mediated by inhibition of the phosphatidylinositol 3-kinase/protein kinase B survival pathway. Furthermore, AR-A014418 inhibits neurodegeneration mediated by beta-amyloid peptide in hippocampal slices. AR-A014418 may thus have important applications as a tool to elucidate the role of GSK3 in cellular signaling and possibly in Alzheimer's disease. AR-A014418 is the first compound of a family of specific inhibitors of GSK3 that does not significantly inhibit closely related kinases such as cdk2 or cdk5.

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Organizational Affiliation: 

AstraZeneca R&D, 15185 Södertälje, Sweden, AstraZeneca R&D, 43183 Mölndal, Sweden. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Glycogen synthase kinase-3 beta	A, B	414	Homo sapiens	Mutation(s): 0  Gene Names: GSK3B EC: 2.7.11.26
Find proteins for P49841 (Homo sapiens) Go to Gene View: GSK3B Go to UniProtKB:  P49841

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
TMU	A, B	N-(4-METHOXYBENZYL)-N'-(5-NITRO-1,3-THIAZOL-2-YL)UREA C12 H12 N4 O4 S YAEMHJKFIIIULI-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
TMU	Ki: 38 - 770 nM (100) BINDINGDB
TMU	IC50: 42 - 330000 nM (100) BINDINGDB
TMU	Ki: 38 nM BINDINGMOAD
TMU	Ki: 38 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.94 Å
• R-Value Free: 0.242 
• R-Value Work: 0.222 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 82.584	α = 90.00
b = 84.913	β = 90.00
c = 178.424	γ = 90.00

Software Package:

Software Name	Purpose
CNX	refinement
CCP4	data scaling
MOSFLM	data reduction
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-08-08 
• Released Date: 2004-08-10 
• Deposition Author(s): Bhat, R., Xue, Y., Berg, S., Hellberg, S., Ormo, M., Nilsson, Y., Radesater, A.C., Jerning, E., Markgren, P.O., Borgegard, T., Nylof, M., Gimenez-Cassina, A., Hernandez, F., Lucas, J.J., Diaz-Mido, J., Avila, J.

Revision History 

• Version 1.0: 2004-08-10
  Type: Initial release
• Version 1.1: 2008-04-29
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance